Mobility limited by cluster scattering in ternary alloy quantum wires

• Published in: Chinese physics B Vol. 23; no. 1; pp. 407 - 411
• Main Author: 张恒 杨少延 刘贵鹏 王建霞 金东东 李辉杰 刘祥林 朱勤生 王占国
• Format: Journal Article
• Language: English
• Published: 2014
• Subjects: cluster; electron; gas; mobility; one-dimensional; quantum; scattering; wire
• ISSN: 1674-1056; 2058-3834
• DOI: 10.1088/1674-1056/23/1/017305

The mobility limited by cluster scattering in ternary alloy semiconductor quantum wire （QWR） is theoretically inves- tigated under Born approximation. We calculate the screened mobility due to clusters （high indium composition lnGaN） scattering in the InxGal_xN QWR structure. The characteristics of the cluster scattering mechanism are discussed in terms of the indium composition of clusters, the one-dimensional electron gas （1DEG） concentration, and the radius of QWR. We find that the density, breadth of cluster, and the correlation length have a strong effect on the electron mobility due to cluster scattering, Finally, a comparison of the cluster scattering is made with the alloy-disorder scattering. It is found that the cluster scattering acts as a significant scattering event to impact the resultant electron mobility in ternary alloy QWR.